Grab bucket mount



March 29, 1949. E. E. BR OSIUS GRAB BUCKET MOUNT 2 sheetsksheet 1 Filed Sept. 14, 1944 V INVENTOR Edgar E Bros/us March 29, 1949. E. E. BROSIUS GRAB BUCKET MOUNT 2 Sheets-Sheet 2 Filed Sept; 14, 1944 v INVENTOR Edgar E 49/105705 Patented Mar. 29, 1949 GRAB. BUCKET MOUNT Edgar. E. Brosiiis, Pittsburgh, Pa., assignor to Edgar: E; Brosius: Gompany; Inc., Sharpsburg;v Par, a corporationof Pennsylvania.

Applicationsepte nber 14, 1944, Serial No..553,992'

3 Claims. ((137-184).

This invention-relates to grab bucket mounts; It has to do particularlywiththe mounting of grab buckets sothat the orientation of the bucket with relation to the support from which it is suspended may be controllably alteredi Grab buckets are ordinarily suspended as from an-overhead crane or the like, by means ofa-steel cable reeved through a pulley. block carrying a hook which books into a bail which carries-the bucket. When: control-by the operator of the orientation of thebuoket during itsoperation is important, as is the case in manyuses to-which grab buckets are put, the hook carried by the pulley. block is fixedly oriented in theblock. The

orientation .of' the pulleyblock inturnis fixed-by the cable which is reeved through it and r which iswound upon a fixedlyorientedoverhead drum. Thus the orientation of: the bucket isfixed.

There are occasions when-it is desirable-to controllably change the orientation of the bucketrelative to theoverhea-d-crane or other'support.

This may. be desirable, for example, when thebucket is required to work in a comparatively narrow space. extending'transverselyoi -the planeill'WhiCh the bucket normally operates. I providefor changing'the orientation of the bucket relative to the hook=-orthe like from which it-is.

suspended," it being. possible by comparatively simple manipulations to dispose thebucket in any of a: plurality ot: difierently oriented positions. Ordinarily it is inost practicablein operation to have the bucket'disposed either generally in a plane coinciding with the; plane of. the hook or generally in a plane perpendicular tothe plane of the hook, andvpurely forpurposes, of explanation and illustration I shall describe the invention as embodied in a mount providing for orienting of the bucket to operate incither of two planes, at right angles to each other, one of such planes coincidingwith the plane of 'the hook. and theother-being disposed. perpendicular to the plane of the hook.-

I provide a grab bucket mount comprising a bucket support, a bail for carrying the support and means for connecting the bail to the support selectively in a plurality of predetermined positions thereabout. In the preferred form of structure shown in the drawings the bail is connectable to the support in each of two positions at right angles to each other. Desirably the bucket support has a plurality of pairs of opposed trunnion receiving means disposed thereabout and trunnions are provided which are adapted to be received by said means of a selected pair, the

2. bail havingbearings adapted to receive the'trunnions whereby to carry-the-support I further provide a; grab bucket mount comprising a bucket support, a :bail for carrying the support and a plurality of bailconnecting devices disposed about the support enabling the bail to be connected to the support in selected- As indicated above; the bucket support is adapted to be suspended upon a hook or the like, an d I desirably-provide means (a bail in the form" shown) conneotable withthe positions thereabout.

support and engageableby the hookor the like through which the-support is adapted to be sus-- pended; the support having-portions with which; saidmeans is adapted to be connected arranged? to receive said means selectively in a plurality of positions about the support;

I still further provide a grab bucket mountcomprising a bucket: support adapted to support a bucket generally'in a predetermined verticali plane relative tothe support, a hookor the like: suspended in'fixed orientation and means engage ableby the hook: or the like and selectively con nectable with the-support to suspend the sup-- port from .thehook orJthe like with said plane; either substantially :coincidingwith or generallyl' perpendicular to. the. plane of the hook or thei like.

Other details; objects and advantages. of" the; invention will become apparent as the following: description of aapresent preferred embodiment thereof proceeds;

In the accompanying-1 drawings'I" have shown a; present preferred embodiment of the invention,-in which:

Figure. 1 isa side: elevational view of agrabi bucket suspended from overhead;

Figure 2 is a side elevational view of the bucket shown in Figure lwas-seen from the right-hand? side of Figure 1';

Figure 3 is an enlarged fragmentary'detail; view partly-in: elevation and: partly in centralvertical cross section showing: the-bucket mount and Figure 4 is a horizontal cross sectional view taken on the line IV--IV of Figure 3.

Referring now more particularly to the drawings, there is shown a grab bucket designated generally by reference numeral 2 and comprising a pair of scoops 3 pivoted together and to an operating member at 4 and carried by links 5 which are pivoted at 6 to a bucket support designated generally by reference numeral 1 and which comprises a vertically arranged cylinder 8 carrying at its upper end a head 9. In the form shown the head 9 is threaded onto the upper end of the cylinder. The upper end of the cylinder is losed by a cap l retained by bolts I I passing thZough the head 9.

/ he invention is concerned with the mount for the bucket and not with the structure of the bucket itself or the operating mechanism therefor. Consequently the bucket structure and the bucket operating mechanism will not be described in detail, although it may be pointed out that the bucket operates by raising and lowering of the pivot 4 which is carried by an operating member in the form of a rod I2 connected with a piston operating in the cylinder 8. The piston is operated by hydraulic fluid supplied by a pump I3 driven by an electric motor I4.

The head 9 is provided with a plurality of bail connecting devices disposed thereabout. In the 1 form of structure shown in the drawings the bail connecting devices are in the form of bores entering the head at right angles to its vertical axis, the bores being in pairs, those of each pair being opposed and coaxial and their axis passing through the vertical axis of the head. The axes of the two pairs of bores intersect each other at right angles. The bores of one pair are designated I5 and those of the other pair are designated IS. The bores I5 and I6 are adapted to receive trunnions whose outer portions are received by hearings on a bail through which the bucket is supported. There is a pair of trunnions designated by reference numeral I1 which are shown in place in the bores I6. The trunnions may be removed from the bores I6 and inserted into the bores I5. The bail is shown at I8. At the ends of its arms it has bearings I9 receiving the outer portions of the trunnions II. A hook passes through the bailand through it suspends the bucket support I and the bucket 2 carried thereby. The orientation of the hook 20 is fixed and the bail I8 always disposes itself substantially in a plane at right angles to the plane of the hook. The orientation of the bucket relative to the hook is determined by'the position in which the bail is attached to the head 9. This position depends on whether the trunnions II are disposed within the bores I6 or within the bores I'5 in the head. When the trunnions are disposed within the bores I 6 the orientation of the bucket is such that its plane of operation is at right angles to the plane of the ho0k20. When the trunnions are disposed within the bores I5 th orientation of the bucket is shifted through an angle of 90 relative to the hook' so that it. then operates in a plane coinciding with the plane of the hook.

I provide in the head 9 four small vertical bores 2|, one intersecting each of the trunnion receiving bores I5 and I 6. The bores 2| are adapted to receive pins or bolts '22 which also pass through the trunnions I I, the latter being appropriately bored for the purpose. Thus by means of the pins or bolts 22 the trunnions are maintained in place in the desired bores I5 or I6 as the case may be. The pins or bolts 22 are held in operative position by nuts 23 threaded thereon as clearly shown in Figure 3.

When it is desired to change the orientation of the bucket relative to the hook 20, this is accomplished by removing from the head 9 the pins or bolts 22, then removing the trunnions II from the bores I5 or I6, then inserting the trunnions in the set of bores other than that from which they were removed and then inserting the bolts -22. When the bucket is picked up by the hook 20 its orientation will automatically shift as the bail I8 always assumes a position with its plane substantially at right angles to the plane of the hook 20.

.While I have shown and described a present preferred embodiment of the invention, it is to be distinctly understood thatthe invention is not limited thereto but may be otherwise variously embodied within the scope of the following claims. r l

I claim: 1. A grab bucket mount comprising a bucket support having a plurality of pairs of opposed trunnion receiving means disposed thereabout,

trunnions adapted to be received by said means of a selected pair and a bail having bearings adapted to receive the trunnions and adapted to carry the support. a

v2. A grab bucket mount comprising a bucket support having a plurality of sets of socket means therein disposed thereabout, trunnion =means adapted selectively to enter said sets of socket means, means for fastening the trunnion means in place in aselected set of socket means and means for carrying the support adapted to be mounted on the trunnion means. I

3. A grab bucket mount comprising a bucket support havingtherein and disposed thereabout a plurality of setsof opposed generally horizon-' tal sockets, trunnions adapted to enter theopposed sockets of said sets selectively, pins.

adapted to enter the trunnions to hold them in place in the sockets of each set and a bail adapted to be mounted on the trunnions inany selected position thereof.

REFERENCES CITED The following referencesare of record in the file of this patent:

EDGAR E. BROSIUS.

Trippett Feb. 16,. 1926 

